Residential setbacks in Suffolk County vary by town and zoning district. Typical one-acre zones require 50 ft front, 25 ft side, 50 ft rear. Quarter-acre zones typically require 30 ft front, 10 ft side, 35 ft rear. East End towns impose larger setbacks in agricultural overlays.
Town of Brookhaven A-1 Residential (1 acre) requires 50 ft front, 25 ft side, 50 ft rear setbacks. Brookhaven A Residential (10,000 sq ft) requires 30 ft front, 10 ft side, 35 ft rear. Town of Islip Residence AA (1 acre) requires 50 ft front, 25 ft side, 50 ft rear. Town of Southampton CR200 (5 acres) requires 100 ft front, 50 ft side, 100 ft rear. Town of East Hampton B Residence (20,000 sq ft) requires 35 ft front, 15 ft side, 35 ft rear. Variances require ZBA approval with showing of practical difficulty or unnecessary hardship under Town Law 267-b.
Setback violations trigger stop-work orders and $250-$1,000 per day fines. Structures may be ordered demolished if variance denied.
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See how Suffolk County's setback rules rules stack up against other locations.
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